Weatheo

Hạ Long Weather by Month

Average temperatures, rainfall and humidity for Hạ Long, Vietnam, month by month, built from OpenWeather’s historical records. Use it to see what a typical Hạ Long month looks like before you travel — then check the live Hạ Long forecast for the days ahead.

Warmest month

June

32°C average high

Coolest month

January

15°C average low

Wettest month

August

202 mm of rain

Driest month

February

29 mm of rain

Average temperature and rainfall in Hạ Long by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January20°C15°C4°C / 30°C
33 mm
82%11 km/h
February21°C16°C5°C / 29°C
29 mm
84%10 km/h
March24°C19°C10°C / 30°C
55 mm
86%9 km/h
April27°C22°C12°C / 33°C
93 mm
85%10 km/h
May30°C26°C19°C / 38°C
81 mm
85%13 km/h
June32°C27°C19°C / 39°C
130 mm
83%12 km/h
July32°C27°C23°C / 38°C
156 mm
85%11 km/h
August31°C26°C6°C / 37°C
202 mm
87%10 km/h
September31°C25°C21°C / 37°C
135 mm
85%10 km/h
October29°C23°C15°C / 35°C
65 mm
80%11 km/h
November26°C20°C11°C / 33°C
33 mm
81%11 km/h
December22°C16°C7°C / 28°C
38 mm
79%12 km/h

Best time to visit Hạ Long

The most comfortable time to visit Hạ Long is generally March and November to December, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around August, totalling about 1,049 mm a year.

Travellers who prefer heat should aim for June, when highs average 32°C. August is the month to avoid if rain would spoil your plans — it averages 202 mm, roughly 7× the rainfall of the driest month (February).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Hạ Long forecast for what is happening now.

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